[Password Manager] Show omnibox icon and anchored prompt once user start typing password

components/password_manager/core/browser/password_manager_client.h

Index: components/password_manager/core/browser/password_manager_client.h
diff --git a/components/password_manager/core/browser/password_manager_client.h b/components/password_manager/core/browser/password_manager_client.h
index 907ea6215f42c046b83107e4827e69daea64c232..c455809b2b1274b5da680c0550aad8b3fd987a8b 100644
--- a/components/password_manager/core/browser/password_manager_client.h
+++ b/components/password_manager/core/browser/password_manager_client.h
@@ -94,7 +94,17 @@ class PasswordManagerClient {
   // that was overidden.
   virtual bool PromptUserToSaveOrUpdatePassword(
       std::unique_ptr<PasswordFormManager> form_to_save,
-      bool update_password) = 0;
+      bool is_update) = 0;
+
+  // Informs the embedder that the user started typing a password and a password
+  // prompt should be available on click on the omnibox icon.
+  virtual void ShowManualFallback(
+      std::unique_ptr<PasswordFormManager> form_to_save,
+      bool is_update) = 0;
+
+  // Informs the embedder that the user cleared the password field and the
+  // fallback for password saving should be not available.
+  virtual void HideManualFallback() = 0;
 
   // Informs the embedder of a password forms that the user should choose from.
   // Returns true if the prompt is indeed displayed. If the prompt is not